Journal ArticleDOI
Carbon Materials for Chemical Capacitive Energy Storage
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TLDR
In order to further improve the power and energy densities of the capacitors, carbon-based composites combining electrical double layer capacitors (EDLC)-capacitance and pseudo-Capacitance have been explored and show not only enhanced capacitance, but as well good cyclability.Abstract:
Carbon materials have attracted intense interests as electrode materials for electrochemical capacitors, because of their high surface area, electrical conductivity, chemical stability and low cost. Activated carbons produced by different activation processes from various precursors are the most widely used electrodes. Recently, with the rapid growth of nanotechnology, nanostructured electrode materials, such as carbon nanotubes and template-synthesized porous carbons have been developed. Their unique electrical properties and well controlled pore sizes and structures facilitate fast ion and electron transportation. In order to further improve the power and energy densities of the capacitors, carbon-based composites combining electrical double layer capacitors (EDLC)-capacitance and pseudo-capacitance have been explored. They show not only enhanced capacitance, but as well good cyclability. In this review, recent progresses on carbon-based electrode materials are summarized, including activated carbons, carbon nanotubes, and template-synthesized porous carbons, in particular mesoporous carbons. Their advantages and disadvantages as electrochemical capacitors are discussed. At the end of this review, the future trends of electrochemical capacitors with high energy and power are proposed.read more
Citations
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Insights from machine learning of carbon electrodes for electric double layer capacitors
TL;DR: In this paper, a comprehensive analysis of extensive experimental data with various machine-learning methods was conducted to identify important characteristics of activated carbons useful to optimize their efficiency in energy storage.
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Porous N-doped carbon material derived from prolific chitosan biomass as a high-performance electrode for energy storage
TL;DR: In this article, a hierarchical porous N-doped carbon material (PNCM) was used as an anode material for supercapacitors and Li-ion batteries.
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Alkaline lignin derived porous carbon as an efficient scaffold for lithium-selenium battery cathode
TL;DR: In this paper, an initial combined carbonization/activation of commercial alkaline lignin and subsequent seleniumloading are adopted to fabricate serial composites of Lignin-derived porous carbon (LPC) and elemental seenium (i.e., serial Se/LPC composites) for high-performance lithium-selenium (Li-Se) batteries.
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Necklace-like MoC sulfiphilic sites embedded in interconnected carbon networks for Li–S batteries with high sulfur loading
Huifa Shi,Zhenhua Sun,Wei Lv,Shaogang Wang,Ying Shi,Yunbo Zhang,Shujie Xiao,Huicong Yang,Quan-Hong Yang,Feng Li +9 more
TL;DR: In this article, a low-cost bacterial cellulose was used as the precursor for interconnected carbon networks and a supporting framework for impregnated molybdate ions for high sulfur loading host, and the as-prepared electrode coupled with the lithium polysulfide catholyte exhibits good cycling stability with a low capacity decay of 0.084% per cycle at 1C for 350 cycles.
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Ultrasonic-assisted preparation and characterization of hierarchical porous carbon derived from garlic peel for high-performance supercapacitors
TL;DR: The results show that ultrasonic waves can effectively peel off surface attachments of the carbonized product, so that activator has a better mass transfer process and create more active sites, and a new and simple modification method for improving the performance of biomass-based PCs.
References
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